Free Domain and URL Analysis Tools
Debug and audit how any domain or URL behaves on the web.
Redirect Inspector
Follow and analyze HTTP redirect chains. See every hop, status code, header, and timing.
Header Inspector
Analyze HTTP response headers, security headers, caching policies, and more.
SSL Inspector
Verify SSL/TLS certificates, expiry dates, chain validity, and protocol versions.
Meta Inspector
Analyze meta tags, Open Graph data, Twitter cards, and SEO metadata.
DNS Inspector
Look up A, AAAA, CNAME, MX, NS, TXT, and other DNS records for any domain.
SPF Inspector
Validate SPF records, expand includes, and count DNS lookups against the 10-lookup limit.
DKIM Inspector
Probe DKIM selectors, validate public keys, and flag weak, revoked, and test-mode keys.
DMARC Inspector
Validate DMARC policy, parse every tag, and check rua/ruf reporting addresses.
MTA-STS Inspector
Validate MTA-STS and TLS-RPT policy, fetch the policy file, and check mx coverage.
BIMI Inspector
Validate the BIMI record, check the SVG logo and VMC, and confirm DMARC enforcement.
Email Auth Inspector
Check SPF, DKIM, DMARC, MTA-STS, and BIMI together — one unified grade and a ranked list of fixes.
WHOIS Inspector
Look up domain registration, registrar, expiry, name servers, and contact records.
Infra Inspector
Cross-tool infrastructure overview with security grading, signals, and insights for any URL.
Tech Stack Inspector
Detect frameworks, CMS, analytics, JS libraries, CDN, and hosting providers behind a URL.
Hosting Inspector
Identify the hosting provider, IPv4/IPv6 footprint, reverse DNS, CDN edge, and HTTP/2/3 readiness.
Open Graph Preview
Preview social share cards for Facebook, X, LinkedIn, Slack, and more. Validate Open Graph and Twitter Card tags and the og:image.
llms.txt / ai.txt Inspector
Check a domain’s AI crawler files — llms.txt, ai.txt, and AI policy — parse their structure, and cross-check against robots.txt.
Favicon Inspector
Check a page’s favicons, apple-touch-icons, and web app manifest icons. Detect missing PWA icons, legacy ICO, and size mismatches.
Subdomain Discovery
Find a domain’s subdomains from Certificate Transparency logs and passive DNS, then validate which hosts resolve and respond.
CSP Inspector
Parse and grade a page’s Content Security Policy. Resolve the effective policy, flag unsafe sources, and copy a hardened version.
Robots.txt & Sitemap Inspector
Parse a site’s robots.txt, test any path against Googlebot, GPTBot and ClaudeBot, and check the sitemaps it declares.
More tools coming soon
CORS, structured data, performance, and HSTS inspectors are on the roadmap.
What is HTTPSense?
HTTPSense is a free suite of URL analysis and HTTP debugging tools built for developers, DevOps engineers, and SEO specialists. Enter any URL and get instant, detailed insights into how it behaves on the web — from redirect chains and response headers to SSL certificates and DNS records.
Every tool runs real HTTP requests against live servers and returns structured, actionable results. No signup required, and no data is shared with third parties.
Why Use HTTPSense?
All-in-one platform
Redirect tracing, header inspection, SSL analysis, DNS lookups, and meta tag auditing in one place. No need to switch between multiple tools.
Real HTTP requests
Every inspection makes actual requests to production servers, giving you the same results a browser would see. Nothing is simulated or inferred.
Security-focused
Header Inspector grades your security header posture with value-based analysis. SSL Inspector checks certificate validity, protocol support, and cipher suites.
Developer-friendly
Raw JSON output on every tool for easy integration into scripts and CI/CD pipelines. Deep-link to any inspection via URL parameters.
Free and private
No account required and no personal data collected.
Who is HTTPSense For?
Frontend & backend developers
Debug redirect loops, read the headers a server actually sends, inspect SSL certificates during development and staging.
DevOps & SRE teams
Check certificate expiry, validate DNS propagation, and audit security headers across environments.
SEO specialists
Verify redirect chains preserve link equity, check meta tags for Open Graph and Twitter Card compliance, test robots.txt against real crawlers.
Security engineers
Assess security header coverage, verify TLS configurations meet compliance requirements, and read a Content Security Policy as a browser resolves it.